Layout Elements completly messed up, maybe related to HighDPI-Mode

[Holger]

I have several forms with RadLayoutControl that looks fine in the Designer, but then running the application, they go completely wild.

I recently enabled HDPI support, all my usercontrols without LayoutControl work fine, but LayoutControl seems to be different.

Pic1 is from Designer, Pic2 from the running application, and I created a minimal reproducable example but I'm unable to attach it here.

Yes, I put Visual Studio in the 96dpi Mode, before using the Designer.

I tested on several computers, but everywhere the same awkward result.

[Dess | Tech Support Engineer, Principal]

Hello, Holger,  

We already have a known issue regarding RadLayoutControl in HDPI scenarios. You can track its progress, subscribe for status changes and add your comments on the following link: https://feedback.telerik.com/winforms/1372652-fix-radlayoutcontrol-the-layout-is-not-correct-on-150-dpi 

Due to the specificity and complexity of the issue, I am unable to suggest a suitable solution with RadLayoutControl. 

However, I can suggest you to consider using a TableLayoutPanel when creating a DPI-aware application. Thus, you can add as many rows/columns as you need in order to arrange the controls. Dock the controls in the respective TableLayoutPanel's cell to fill the available space. The main benefits here are:
- The controls do not have specific location and size. This way when the form is resized the controls will fit in the available space.
- You can easily set Margin between the controls instead of using anchoring.
- The application will look better when it is scaled.

I hope this information helps. If you need any further assistance please don't hesitate to contact me. 

Regards,
Dess | Tech Support Engineer, Sr.
Progress Telerik

[Holger]

Thanks, I already stopped using RadLayoutControl, since it seems to do all it's 'magic' only in the designer and hard-codes the final positions, it's hard to modify anything programmaticly. TableLayoutPanel should do a better job, and a row-column layout, will do better in most scenarios.

[Dess | Tech Support Engineer, Principal]

Hi, Holger,

I am glad that you have found a suitable approach for proceeding further with developing your application.

In my opinion, using a TableLayoutPanel is worth giving a try.

You can also have a look at the following articles which give some tips and hints about developing DPI-aware application:

https://docs.telerik.com/devtools/winforms/telerik-presentation-framework/dpi-support 

https://docs.telerik.com/devtools/winforms/knowledge-base/hdpi-tips-and-tricks 

Should you have further questions please let me know.

Regards,
Dess | Tech Support Engineer, Sr.
Progress Telerik